Adjustable transition coupler



FIG. 1 is a front perspective view of an adjustable transition couplershowing my new design.

FIG. 2 is a top view thereof.

FIG. 3 is a right side view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a bottom view thereof.

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines in the drawings illustrate portions of the adjustabletransition coupler that form no part of the claimed design.

CLAIM The ornamental design for an adjustable transition coupler, asshown and described.